ncv4949dw ON Semiconductor, ncv4949dw Datasheet
ncv4949dw
Related parts for ncv4949dw
ncv4949dw Summary of contents
Page 1
... NCV4949DW 100 mA, 5.0 V, Low Dropout Voltage Regulator with Power−On Reset The NCV4949DW is a monolithic integrated 5.0 V voltage regulator with a very low dropout and additional functions such as power-on reset and input voltage sense designed for supplying the micro-computer controlled systems especially in automotive applications. ...
Page 2
... Maximum Ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute maximum-rated conditions is not implied. Functional operation should be restricted to the Recommended Operating Conditions. NOTE: ESD data available upon request. NCV4949DW Description Rating http://onsemi.com 2 ...
Page 3
... Decreasing = 1 1 Sense Threshold Hysteresis Sense Output Low Voltage (V 1. Sense Output Leakage ( Sense Input Current PREREGULATOR = 10 mA) Preregulator Output Voltage (I Z NCV4949DW = 14 V, -40 C < T < 125 C, unless otherwise specified Symbol V < 50 mA) V out < 50 mA) V out V V ...
Page 4
... C J 200 150 100 50 0 0.1 1 OUTPUT CURRENT (mA) out Figure 3. Dropout Voltage versus Output Current 3 2 2.0 1.5 1.0 0.5 0 0.1 1 OUTPUT CURRENT (mA) out Figure 5. Quiescent Current versus Output Current NCV4949DW 6 5.0 4.0 3.0 2.0 1 100 120 0 1.0 0.40 0.30 0.20 0. 100 −40 −20 3.0 T 2.5 J 2.0 1.5 1.0 0 ...
Page 5
... Regulator Output Voltage 6 5.0 J 4.0 Resistor 10 k from Sense Output to 5.0 V 3.0 2.0 1.0 0 1.0 1.05 1.1 1.15 1.2 1.25 1.3 1. SENSE INPUT VOLTAGE (V) SI Figure 9. Sense Output versus Sense Input Voltage NCV4949DW (continued) 4.7 4.66 Upper Threshold 4.62 4.58 4.54 4.5 Lower Threshold 4.46 4.42 4.8 4.9 5.0 −40 − JUNCTION TEMPERATURE ( C) J Figure 8. Reset Thresholds versus 1.4 1.38 1.36 Upper Threshold 1.34 1 ...
Page 6
... NOTES: 1. For stability Recommended for application NCV4949DW APPLICATION INFORMATION less than 8.0 V supply transients of more than 0.4 V/ms can cause a reset signal perturbation. To improve the transient behavior for supply voltages less than 8 capacitor at Pin 3 can be used. A capacitor at Pin 3 (C3 1.0 mF) reduces also the output noise ...
Page 7
... The NCV4949DW is a monolithic integrated low dropout voltage regulator. Several outstanding features and auxiliary functions are implemented to meet the requirements of supplying microprocessor systems applications. Nevertheless suitable also in other applications where the present functions are required. The modular approach of this device allows the use of other features and functions independently when required ...
Page 8
... V − Reg Figure 15. Reset Circuit NCV4949DW Standby output voltage drops below the reset threshold only a bit longer than the reaction time results in a shorter reset delay time. The nominal reset delay time will be generated for standby output voltage drops longer than approximately 50 ms ...
Page 9
... ORDERING INFORMATION Device Operating Temperature Range NCV4949DW* T NCV4949DWR2* T *NCV4949DW - +125 C. Guaranteed by design. NCV prefix is for automotive and other applications requiring low high site and change control. NCV4949DW Package = - +125 C SO-20W +125 C SO-20W J http://onsemi.com 9 Shipping 38 Units / Rail ...
Page 10
... B B 20X 0. 18X A1 T NCV4949DW DW SUFFIX SO-20W CASE 751D-05 ISSUE F q SEATING PLANE C http://onsemi.com 10 NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. ...
Page 11
... Notes NCV4949DW http://onsemi.com 11 ...
Page 12
... Email: ONlit@hibbertco.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada NCV4949DW JAPAN: ON Semiconductor, Japan Customer Focus Center 2-9-1 Kamimeguro, Meguro-ku, Tokyo, Japan 153-0051 Phone: 81-3-5773-3850 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 12 NCV4949DW/D ...